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* Move CompositeSignaturesWithKeys into net.corda.core.crypto package. (cherry picked from commit 8f29562) * Rename and move CordaPluginRegistry to reflect its real purpose now. Simplify serialization code a bit. (cherry picked from commit e2ecd3a) * Docs: docsite improvements * Remove discussion of webserver from 'writing a cordapp' page. * Fixup some flow docs. * Add a couple more package descriptions. (cherry picked from commit 2aedc43) * Review comments (cherry picked from commit ba1d007) * Review comments - always apply default whitelist and no longer load it via ServiceLoader (cherry picked from commit 7d4d7bb) * Added wording about renaming services resource file
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Writing a CorDapp
When writing a CorDapp, you are writing a set of files in a JVM language that defines one or more of the following Corda components:
- States (i.e. classes implementing
ContractState) - Contracts (i.e. classes implementing
Contract) - Flows (i.e. classes extending
FlowLogic) - Web APIs
- Services
CorDapp structure
Your CorDapp project's structure should be based on the structure of the Java Template CorDapp or the Kotlin Template CorDapp, depending on which language you intend to use.
The src directory of the Template CorDapp, where we define our CorDapp's source-code, has the following structure:
src ├── main │ ├── java │ │ └── com │ │ └── template │ │ ├── Main.java │ │ ├── api │ │ │ └── TemplateApi.java │ │ ├── client │ │ │ └── TemplateClientRPC.java │ │ ├── contract │ │ │ └── TemplateContract.java │ │ ├── flow │ │ │ └── TemplateFlow.java │ │ ├── plugin │ │ │ └── TemplatePlugin.java │ │ ├── service │ │ │ └── TemplateService.java │ │ └── state │ │ └── TemplateState.java │ └── resources │ ├── META-INF │ │ └── services │ │ ├── net.corda.core.serialization.SerializationWhitelist │ │ └── net.corda.webserver.services.WebServerPluginRegistry │ ├── certificates │ │ ├── sslkeystore.jks │ │ └── truststore.jks │ └──templateWeb │ ├── index.html │ └── js │ └── template-js.js └── test └── java └── com └── template └── contract └── TemplateTests.java